Glazed Donut Flavour Concentrate by Global Hubb is for use in DIY mixing, and will require other ingredients such as PG and VG to use correctly.
Flavour concentrates are designed to be added to a base mix of VG and PG, infusing a particular flavour into the blend. Users can add in as little or as much flavouring as they wish, allowing for either a strong or weak flavour blend.
By Squid from Devon
Has a doughy undertone with sugar on the tongue
By Guy Incognito from Cheshire
Even after only a week of steeping this flavour comes through well, so if you like donuts this one is good.